Apparatus for treating heated metal under pressure.



'PATENTED MAY 1, 1906.

. w. A. WOOD. APPARATUS FOR TREATING HEATED METAL UNDER PRESSURE.

APPLICATION FILED JULY25, 1905.

2 SHEETSSHEET 1.

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No. 819,261. PATENTED MAI 1906.

r W. A. WOOD; I

APPARATUS FOR TREATINGHEATBD METAL UNDER PRESSURE.

APPLICATION FILED JULY25,1905. I

2 SHEETS-SHEET 2.

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UNITED smiles PATENT oF Io I WILLIAM ana mrmaa' WOOD, or ANSONIA, coNNEcrIcUr, ssmnon .-"1() THE (JOEBRASS MANUFACTURING COMPANY, A CORPORATION OF CON'NECTiC-UT.

APPARATUS FOR TREATING HEATED METAL. UNDER PRESSURE-r j Specification of Letters Patent.

Application filed-[uly 25,1905. fierialNo. 271.233.:

Patented. May 1, 1906.

To all tul e om it may cancer-1c." I

Be it known thatI, WILLIAMMAIJEXANDER; Woo I a citizen of the United States, resid-. ing at Ansonia, cou nty'of New Haven, State of Connecticut, have invented certain new and useful Improvements in Apparatus for Treating Heated Metal Under. Pressure, of which the following isa specification.

My invention relates generally toapparatus emplo ed in the, extrusion process of manuthe like.

v The inventionhas special reference to the construction and mounting of .that part of the The invention is designed,- primarily, to improve the constructionof' the container, the object being to give it greater heat and pressure resisting powers, with a View to lengthening the life of the same, which, is ordinarily so limited astoinvolve considerable-expense 4 in making necessary renewals. .The invention also embraces certam improvements in the construction and arrangement of the machine or apparatus proper, the object being to produce an automatic cooperation of certain members or parts thereof, and thereby facilitate the operation ofentering and discharging the metal from the container.

;The accompanying drawings will serve to.

illustrate apparatus suohasmay be employed for. carrying my invention into efiect,v

wish it understood, however, that I do not limit myself to the same, as various changes may be made therein or, other forms of apparatussubstituted 3 therefor operating in substantially the same manner to produce practically the same result.

, In the drawings, Figure lisa sectionalplan view of the apparatus. Fig; 2 is aside elevation thereof. Fig.. 3 is a transverse sectionon theline 3 s ofFig, 1. Fig. 4 is an enlarged. sectional view on the line 8 s? of Fig.1 .and Fi 5 is adetail sectional View on 59' v j ,Referringnowi to the drawings, the,.con-

theline s 8 Fig. ,2.

,. taineriisshownin the form of, a cylinder 1',

.whiphzis providedwith trunnions 2 2, mounthiu parallel the end facturmg solid or hollow Wire, rods, bars, and

more sets such bearings are provided in order that containers ofdifi'erent length may be employed. The carriage 4 is supportedby gplde rods or ways 5, connecting,

ames 6 and 7, and is movable toward the right as viewed in Fig.1 to carry the container clear ofthe die 8 and die-holder 9, which are mounted-in-the' end frame 6. When thus adjusted, the container may be rotated by means of suitable gearing 1 0, operated bya hand-crank 11 until it assumes either an inclinedorvertical position, as indicated by dotted lines in Fig. 2, with its open end presented to receive the billet or body of metal to be acted upon.

The containerproper consists of the cylinfder I, which is given a length and diameter such as to provide interiorlythereof, a-cham- [ber 12 of, suitable dimensions to receive the billet or chargev of metal and hold the same while it is being acted upon by the ram, 13 of a hydraulic piston, the construction and operation of which will be later on described.

Asa means of strengthening the cylinder andin order ,to prevent bulging. or distortion thereo'l under the combined action of the heat and pressure to. which it is subjected in vuse a reinforcing-covering is employed therefor. This covering consists, as shown, of a series .of concentrically-disposed cylinders 14,

length thanthe cylinders of asbestos and are united at their ends to completely inclose the latter in the, intervening annular spaces formed between the same.

'At the end of the container adjoining the ,die the, several metal cylinders are'given an increased thicknessv to fit closely one upon the other and are secured to ether to resist the end thrust ofthe' ram bybeing provided with interlocking flanges and shoulders and 21. The interlock is effective inone di- .rection onlyin order that the cylinders may be readily, disconnected for purposes-of re-, newal, repair, etc. ,At the opposite endof the container a ring 22 encirclesthe ingner cylin-' der, and is screw-threaded into thegouter cyled bearinfgs 3 3 of carriage 4. Two or inder, as indicated at 23. The inner face of the ring is concentrically grooved or corrugated to provide annular seats 24 for the cyllnders 14 and 16 and ribs or beads between such seats, which enter between the several cylinders and exert pressure upon the interposed non-heat-conducting filling.

The inner cylinder at the end adjoining the ram rojects beyond the ring 22 to complete' y inclose the charge of metal before it is acted upon, and the bore of such projecting portion of the cylinder isslightly enlarged to insure entry of the ram in the event of the container being slightly out of alinement.

The outer cylinder is given anincreased thidlmess over the inner cylinders and con-- tains a .suflicient body of metal to enable it to effectually withstand the lateral pressure developed within the chamber 12.

The die-holder is shown in the form of a cylindrical block 9, which is counterbored at 26 to receive the die 8 and is shaped to enter the cylinder .1 and overlap the interlocked ends of one or more of the adjoini clinders 14 16,856. A second cylindrical bloc 27, counterbored to provide a seat 28 for the dieholder 9, is fitted in the central bore 29 of the end frame 6 and secured by means of two'or more hydraulic locking devices 30 .30, the operation of which may be controlled in any suitable manner. Forming a continuation of the block 27 there is :a tube 31, extending some distance beyond the end frame as a support or carrier for the rod, bar, or tube as it comes through the .die from the container.

Mounted 1n the line with the container there is a hydraulic cylinder 32., which is exteriorly shouldered to fit an annular seat 33,, formed in the end frame 7. The ram 13,

form-mg a continuation of the hollow piston' 34 of theeylinder 32, is centered relatively to the container byuides 35 and 36, which are connected throu a nod 37. One end 38 of the rod is secure to the guide 36, and the opposite end .39 thereof is held in a device 40 u. on the guide .35., which yields to a psnessure s lghtly in excess of that necessary to move the carriage along on the rods or we s of the machine. The guide 35 is scour to and movable with the iston, and the guide 36 is fanned centrally e? the carri age 4. Movable in the guide 36 there is a sleeve 41, which serves as asupport for the ram 13 and is ton nectod through a series of bolts or headed rods 42' to have a limited back -and-torth movement with the piston. The sleeve is shouldered in the .cy-lmdnical guide, as indicated at 43, to impart such motion in one direction to the carriage 4 to .eiiec-t the withdrawel of the container the latter is to be swung upward to neoeive the. charge, as

. above described. The device 40 eonsists of two pins 44 44,

oppositely arranged and movable in guides under the action of springs 45 t5, the tension the remainder of its stroke.

of which may be varied by means of screws 46 46. p The pins are normally held by the s rings in the position shown in detail in Fig. 5 that is to say, pressed together in the rear of the rod 37.

The headed ends of the bolts 42 ha a free back-and-forth movement in guidewa 47, provided in the piston, a d are operatively connected to receive motion therefrom by aperturedplates 48 48, which are secured upon the outer end of the piston and closely encircle the bolts proper.

Assuming the various parts of the machine to be the position shown inFig. 1., the operation is briefly as follows: As fluid under pressure is admitted to the cylinder through port 49 piston moves torward and motion is transmitted from the same through the device 40 and rod '37 to the carriage 4,-

causing the container to abut and seat solidly agaimt the die-holder, and thereupon the device 40 yields and is carried forward upon the rod 37 by the guide 35. Under the continued advance of the piston the ram acts upon the billet in the container until the metal has beenextruded through the die, and. when nothing remains in the container except the waste end of the billet the flow of fluid in the cylinder is discontinued to relieve the pressure upon the die-holder. Fluid is then admittedin-to the inner end of the cylinders of the locking devices 30 30 and acts Juponthe pistons to withdraw the engaging ends thereof from the recesses in the block 27. Pressure is again applied to effect a further advance of the piston, and the ram thereof, acting upon the waste end of the billet in the container, carries the latter forward, together with the die-holder and block 27, until the motion of the container is checked by the abutment 50. Thereafter the continued for wardmovement of the ram ejects the waste end of the billet from the container and at the same time forces the die and die holder through the :end frame. The article thus produced is then removed, and after the pis ton is returned to its normal position the die and die-holder are reset in the machine by hand. During the forward travel of the piston as above described the headed ends of the bolts 42 enter the hollow body thereof, and as the taper :51- on the ram seats in the conical bore 52 of the sleeve 41 the latter is carried forward in the guide 36 upon the carriage and moves with the ram throughout The operator then opens the valve 53, and as thetl-uid is exhausted from the cylinder through the port 54 the piston is returned to normal position by weights (not shown) acting through chains '55., passing over sheaves (not shown) and attached to eyebolts 56 upon the guide 35. the returnstroke of the piston as the parts assume the position shown in bolts 42 in contact with the plates 48 and the shoulders ,13 of the ram-support 41 and its guide 36 in engagement-the carriage 4 will be drawn away from the endframe 6 until the container clears the same sufficiently to permit it to be swung up for the insertion of another billet preparatory to the next operation.

Having thus described my invention, I 10 claim-.

' 1. An extrusion-machine comprising a supporting-frame, a container and die mounted in the frame, a cooperating ram movable independently of the container, and means for 1 5 transmitting motion from the ram to the container.

2. An extrusion-machine comprising a supporting-frame, a container and die mounted in the frame, a cooperatin ram, and means for giving the container t e motion of the ram throughout a portion only of the stroke thereof.

3. An extrusion-machine comprising a supporting-frame, a container and die mounted in the frame, means for rotating the container, a cooperating ram, and means for giving the container the motion of the ram throughout a portion only of the stroke thereof.

4. An extrusion-machine comprisinga supporting-frame, a carriage movable 1n the frame, a container mounted-in the carriage, a

cooperating ram, and a connection independ-' ent of the container for transmitting motion from the ram to the carriage.

5. extrusion-machine comprisinga supporting-frame, a carriage movable in the frame, a container mounted in the carriage, a cooperating ram, and a connection for trans mitting motion from the ram to the carriage, said connection being such as to yield to pressure in excess of that required to advance the carriage in the frame.

6. An extrusiommachine comprising a die, a frame providing a seat for the die, a carriage movable in the frame, a container'supported by the carriage, a cooperating ram movable relatively to connection for transmitting motion from the ram to the carriage. 7. An extrusion-machine, comprising a frame, a'die mounted therein, hydraulic locking means for the die, a carriage movable in the frame, a container mounted in the carriage, and a hydraulically-reciprocated ram movable through the container.

In testimony whereof I afiix my signature in the presence of two Witnesses.

I WILLIAM ALEXANDER WOOD.

Witnesses;

JAMES ROBERT CoE, E. C; WHEELER.

the container, and a 

